Home>Bearing knowledge>Wheel bearing seal layout analysis of domestic and foreign comparison inspection (1)

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Analysis of the layout of hub bearing seals at home and abroad (1)

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The comparative analysis method is a shortcut for the company to advance the skills; to improve the quality of the products; to analyze and compare similar samples at home and abroad; to obtain information on many skills and quality of the other side; to learn the strengths and characteristics of foreign products in terms of layout skills; For my use; to overcome the company's distance and lack of product quality and skill level; to improve; to catch up with the advanced level at home and abroad; to strengthen the competitiveness of shopping malls; and then win the domestic and foreign markets.
First, the bearing oscillation acceleration bearing acceleration value is carried out on S0910 (III). Firstly, the oscillation acceleration value corresponding to the different steel ball of the wheel bearing is detected. From the perspective of the oscillation of the pass band; the uniform oscillation value of the domestic bearing is higher than that of the foreign The bearing height is 5. 8db, which is different from the same frequency band; the domestic bearing is significantly higher than the foreign bearing in the high frequency band. This is parallel with the ferrule two raceways, waviness, roughness, steel ball quality, bearing cleanliness. And many other elements are related.
Second, bearing clearance and rotation accuracy The axial clearance of foreign bearings is much smaller than that of domestic bearings. The rotation accuracy of foreign bearings is significantly higher than that of domestic bearing products. Bearing clearance and rotation accuracy have an important impact on sealing performance; The larger the gap; the lower the accuracy; the worse the sealing effect.
Third, bearing grease filling capacity of domestic bearings is 27% more than foreign bearings. Because it can not accurately calculate the net space inside the bearing; no known fat filling rate. But because the diameter of the steel ball of foreign bearings is large; the number of steel balls Less; seal skeleton steel plate. Resentment 豢 豢 豢 豢 溆Ρ 溆Ρ 溆Ρ . . . . . . . . . . . . . . . ; ; ; ; ; ; ; ; ;.

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